"Rhodey is much more in the dead center of things," Downey Jr told Entertainment Weekly. "He's much more dynamic. We've made this decision that while Tony is a technical guy, he's not really a trained guy.

"There's a lot of fun to be had with Don because he's really good with hardware and he's a martial artist, so it's been really fun exploiting this possibility of Tony having moments like the one in Avengers, like the one with Cap where he decides, 'Oh screw it, he probably knows what he's doing'.

"So there's a lot of that and a lot more fun and a lot more depth to Rhodey this time around."